Gold separator or washer.



No. 680,!76. Patented Aug. 6, 199|.

- G. ROBERTSON.

GOLD SEPABATUB 0R WASHER.

(Application led Oct. 20, 1900.)

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(No Model.)

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No. 680,176. Patentod Aug. 6, |90I.

G. ROBERTSON.

GOLD S'EPARATOR 0R WASHER.

(Application filed Oct. 20, 1900.)

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UNITED STATES PATENT OEEIOE.

GEORGE ROBERTSON, OF DURANGO, COLORADO.

GOLD SEPARATOR OR WASHER.

SPECIFICATION forming part of Letters Patent No. 680,176, dated August 6, 1901.

' Application filed October 20, 1900. Serial No. 33,668. (No model.)

To all whom it myconcern: Y

Beit known that I, GEORGE ROBERTSON, a citizen of the United States, residing at Du'- rango, in the county of La Plata and State of Colorado, have invented new and useful Improvements in Gold Separators or IVashers, of which the following is a specification.

In the accompanying drawings, illustrating this invention, Figure l is a side view of the separator. Fig. 2 is an end view. Fig. 3 is a plan view, partly broken away. Fig. 4: is a sectional view on the line 4 4, Fig. 2; and Figs. 5 and 6 represent details.

The invention has relation to gold separators or Washers for placer-Work; and it consists in the novel construction and combinations of parts, as hereinafter set forth.

In the annexed drawings the machine is shown having a rectangular framework A, consisting of uprights and cross-beams.

B indicates the inclined pan or riffle-box, usually having an angular or V-form bottom, provided With riftles a and upper screens b, a series of which may be used, according to the requirement of the Work. The pan is supported from the swinging frame C by means of the arms or standardsD, which are vertically adjustable, having screw-stems o, which are secured in position on the frame by nuts o. The upper ends of these standards D are angularly made, so as to have shoulders at c" to support the pan. These outwardly-offset upper ends are also provided with slots or notched apertures b for the fastening screws and nuts b", said notched apertures or slots serving to enable the operator to change the inclination of the pan to.

a considerable degree, as may be advisable when a dry separating action is desirable.

The swinging frame O is provided With a bar or bearing o3 for the engagement of the end of the pitman d', which is connected by its other end to a wrist-pin e on the disk e', which is secured to the shaft E, which also carries sprocket-pinions f, whereby it is opL 'erated by sprocket-chains from the sprocket- Wheelsf' of the shaft F, which may be turned by the crank F or in any other suitable manner. The shafts E and F are inclosed in bearings G of tubular form,which are strapped to the framework and are provided with interior ball-bearing, as indicated at g, in order to facilitate the running of the driving parts.

H represents the pump, having the supplyhose h and the delivery-hose h', said pump being operated from the upper shaft F by means of the pitlnan 7c, which is connected to a Wrist-pin of the disk K.

L L represent the swing-arms or swingframes, which c'onnect the swinging frame O to the bar A' of the main frame, said arms being pivoted by the' lower ends or bars to said swinging frame and by the upper ends or bars to the adjustable or bracket boxings m, which are secured to the`bar A. These boxings can be readily adjusted toward or away from each other in such a manner as to give the pan or rifiie-box less or more tilting or settling motion, as it may be desired. Usually the swing-arms are connected in frame form,'being made of piping, as indicated. p

By means of the nuts in the screw-stems of the supporters D the angle of inclination of the pan or riffle-box, can be changed to' alter the gravity action when necessary.

The hopper is indicated at S, said hopper being provided with pipes or tubes s, Whereby water is conveyed into the hopper from the water tank or box T, into which the hose from the pump discharges. This Water-tank is made with small perfor-ations 'usually to provide a drip for the riflie-box below.

Having described this invention, what I claim, and desire to secure by Letters Patent,

In a gold-separator, the horizontal transverse supporting-beam, the upper stationary water-box, having a perforated bottom, the vibratory frame, the laterally adjustable bearing-boxes upon said beam, the hangers for said frame, having pivotal bearings in said bearing-boxes, and a pivotal connection with said frame, the laterally oset or shouldered screw-threaded standards carried by said frame, the adjusting-nuts for said standards, the riffle-box resting upon lthe shoulders of said standards, which have open slots at; their upper ends, the securing-bolts fojrg said rife-box engaging said slots Yof the standards, the hopper` on the saine level as said water-box, the Water-tubes communicating with said Water-box, and located at opposite sides of said hopper inside and at ytheT lower portion thereof, and means for transf verseiy vibrating said frame, and rfe-box, substantially as specified. Y

In testimony whereof I ax my signature in presence of two Witnesses.

GEORGE ROBERTSON.

Witnesses:

. ARTHUR W. AYRES,

WALTER F. WEIGHTMAN. 

